Which of the following pairs, can not be iso-electronic?(i) Na+, Mg2+(ii) Al3+ , O–(iii) Na+, O2–(iv) N3–, Cl–

Which of the following pairs, can not be iso-electronic?(i) Na+, Mg2+(

1.	Which of the following pairs, can not be iso-electronic?(i) Na+, Mg2+(ii) Al3+ , O–(iii) Na+, O2–(iv) N3–, Cl–
Answer» (ii) Al³⁺ , O^–and (iv) N^3–, Cl^–are pairs, can not be iso-electronic.

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Which of the following pairs, can not be iso-electronic?(i) Na+, Mg2+(ii) Al3+ , O–(iii) Na+, O2–(iv) N3–, Cl–

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